Which of the following is true regarding the use of one-sample z-test * it is used to compare a sample from a population when the population mean and SD is unknown it is used to compare means of 2...

Extracted text: Which of the following is true regarding the use of one-sample z-test * it is used to compare a sample from a population when the population mean and SD is unknown it is used to compare means of 2 population from each other given that their SD are known it is used to compare a sample from a population given that the population mean and SD is known it is used to compare means of 2 samples from each other using the sample means and SD All of the following are disadvantages of using a one-sample z-test as Test Statistics EXCEPT * It can not be used in an experiment even if all the criteria for a true experiment is met. The major problem with one-sample z-test is the validity of Random Sampling one-sample z test can be used only when the mean and standard deviation of the population is known. It only uses one sample